言者无心 听者有意 怎样翻译成英语

(It's hard to find an equivalent expression for this common phrase,but here are a few that might work,depending on the situation.)
「言者无心,听者有意.」
You might say:
Mindless words can cause offense.
Mindless words can be taken seriously.
Words [can] hurt.

The word listener intends unintentionally

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a casual remark sounds significant to a suspicious listener。